Pollution and abrasion test system for electro-hydraulic servo valve

Abstract

A pollution and abrasion test system for an electro-hydraulic servo valve comprises four parts: a power source, an oil pollution degree control part, an electro-hydraulic servo valve mounting table and a system oil pollution degree detection part, wherein the power source part provides source power for the whole test system, the oil pollution degree control part is directly connected at the back of the power source part of the system, and controls the working oil pollution degree in test, the electro-hydraulic servo valve mounting table part is connected between a pollution level control part and the system oil pollution degree detection part, the system oil pollution degree detection part is connected with a return circuit of the system, that is between the electro-hydraulic servo valve mounting table and a system oil tank. The system is used for carrying out pollution and abrasion test on the electro-hydraulic servo valve, avoiding test error caused by particles pollution, the pollution degree of the test system is stabled in the pollution degree condition required by the test, the real-time monitoring to the pollution degree is achieved, the real-time adjustment is realized, and the test system is high in reliability, stable to operate, and easy to operate.

Description

technical field [0001] The invention relates to a pollution and wear test system for an electro-hydraulic servo valve, in particular to a test system with a variable and controllable pollution degree of the working oil of the electro-hydraulic servo valve. The test system can ensure that the electro-hydraulic servo valve is subjected to pollution and wear tests under different oil pollution levels. The system runs smoothly and is easy to control. The utility model belongs to the technical field of hydraulic pressure and is a hydraulic test system. Background technique [0002] At present, the test devices designed for the pollution of hydraulic valves all adopt the test method of adding standard AC test dust or MTD test dust from the outside. For example, JB / T7857-2006 (method for evaluating the pollution sensitivity of hydraulic valves), the test circuit for the pollution sensitivity of hydraulic valves given is the test circuit designed by adding MTD test dust; the Chine...

AI Technical Summary

Problems solved by technology

There are two problems in the test method of applying AC test dust or MTD test dust from the outside: first, the premise of the contamination and wear test of hydraulic components requires that the test system itself does not produce pollutants and interfere with the test results, which is required in the test. Under certain conditions, it is difficult to guarantee at present; Secondly, the size and hardness of the pollutants encountered by the electro-hydraulic servo valve in the actual use process are complex and changeable, and only the pollutant particles with a single hardness are used to replace the pollutants in actual use. Experiments are carried out, and the test results will have certain deviations from the actual situation.

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